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$329+ Cheap flights from Rapid City to San Diego (RAP - SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SAN
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Rapid City to San Diego

Cheapest flights from Rapid City to San Diego
Explore the most affordable flight options available from Rapid City to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/195:40 pm
RAP
-
SAN
1 stop5h 55m
United Airlines
Sat 2/216:30 am
SAN
-
RAP
1 stop5h 43m
United Airlines
Deal found 2/2$329
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1410:54 am
RAP
-
SAN
2 stops12h 55m
Delta
Wed 2/186:15 am
SAN
-
RAP
1 stop8h 29m
Delta
Deal found 2/2$359
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:30 am
RAP
-
SAN
1 stop4h 47m
United Airlines
Tue 12/111:00 am
SAN
-
RAP
2 stops8h 33m
United Airlines
Deal found 2/1$361
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:53 am
RAP
-
SAN
1 stop12h 40m
American Airlines
Sun 4/1910:40 pm
SAN
-
RAP
1 stop11h 43m
American Airlines
Deal found 2/2$375
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:40 pm
RAP
-
SAN
1 stop5h 55m
United Airlines
Sun 2/226:30 am
SAN
-
RAP
1 stop5h 43m
United Airlines
Deal found 2/2$400
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:30 am
RAP
-
SAN
2 stops12h 18m
United Airlines
Mon 3/911:03 am
SAN
-
RAP
2 stops8h 31m
United Airlines
Deal found 2/2$405
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/52:08 pm
RAP
-
SAN
1 stop9h 42m
American Airlines
Mon 2/96:20 am
SAN
-
RAP
1 stop6h 04m
American Airlines
Deal found 2/2$409

Find flight deals from Rapid City to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$324
(United Airlines)

Popular in

March

Cheapest in

June

Average price

$372
Provider with most accurate pricing for Rapid City-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-San Diego flights.
Search Deals
From Rapid City to San Diego
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($90 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Rapid City to San Diego that are best for you.

Fly from

Rapid City

Fly to

San Diego

Route

Depart

Return

Price

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Sat 2/14

10:54 am-10:49 pm

2 stops12h 55m

San Diego

Wed 2/18

6:15 am-3:44 pm

1 stop8h 29m

$359

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Thu 4/9

12:00 pm-8:12 pm

2 stops9h 12m

San Diego

Sun 4/19

6:32 am-1:08 pm

1 stop5h 36m

$364

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Thu 2/19

5:20 am-9:24 am

1 stop5h 04m

San Diego

Sat 2/21

11:05 am-10:16 pm

2 stops10h 11m

$394

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Thu 3/5

5:41 pm-10:35 pm

1 stop5h 54m

San Diego

Mon 3/9

11:03 am-8:34 pm

2 stops8h 31m

$400

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Wed 2/18

5:40 pm-10:35 pm

1 stop5h 55m

San Diego

Sun 2/22

6:30 am-1:13 pm

1 stop5h 43m

$400

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Tue 6/2

4:30 pm-11:41 pm

1 stop8h 11m

San Diego

Fri 6/5

3:15 pm-10:24 pm

1 stop6h 09m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Compare providers for flights from Rapid City to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Rapid City to San Diego in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Rapid City-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Rapid City-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Rapid City to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Rapid City with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Rapid City to San Diego

What is the cheapest month to book a flight from Rapid City to San Diego?

Currently, June is the cheapest month in which you can book a flight from Rapid City to San Diego (average of $182). Flying from Rapid City to San Diego in April is currently the most expensive (average of $348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Rapid City to San Diego?

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated February 4, 2026.
Read reviews from past customers who have flown United Airlines from Rapid City to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,236 reviews
United Airlines
7.4
Good
9,236 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Rapid City to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Rapid City to San Diego?

    Airlines like Delta and United Airlines fly from Rapid City to San Diego in about 9h 12m. The time it takes to get you to your destination can typically vary by up to 3h 43m. Rapid City and San Diego are separated by a distance of 1090 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Rapid City to San Diego round-trip?

    Cheapflights users have booked flights from Rapid City to San Diego round-trip from $189. United Airlines is priced at 56% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Rapid City to San Diego that include hotel bookings?

    Yes. In addition to deals on Rapid City to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rapid City to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rapid City to San Diego.

  • Can I find deals for business class flights from Rapid City to San Diego?

    Yes. Cheapflights offers flight deals from Rapid City to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Rapid City to San Diego?

    Currently, June is the cheapest month in which you can book a flight from Rapid City to San Diego (average of $182). Flying from Rapid City to San Diego in April is currently the most expensive (average of $348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Top airline flying from Rapid City to San Diego

Discover the top airline that operate flights from Rapid City to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$325FlexibilityNo cancel feeOn-time69%

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